“Influence of Simultaneous Doping of Tl on the Transition Temperature Tc and the Lattice Parameters of HgBa2Ca2Cu3O8+ δ Superconductors”. 2017. Ibn AL-Haitham Journal For Pure and Applied Sciences 22 (3). https://jih.uobaghdad.edu.iq/index.php/j/article/view/1207.